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1 – 10 of 11
Article
Publication date: 2 March 2012

Casimiro Álvarez‐Mariño, Xose M. Lopez‐Fernandez, Antonio J.M. Jacomo Ramos, Ricardo A.F. Castro Lopes and José Miguel Duarte Couto

This paper aims to present and define a factor to assess the severity supported along transformer windings when the transformer is subjected to a transient voltage waveform due a

Abstract

Purpose

This paper aims to present and define a factor to assess the severity supported along transformer windings when the transformer is subjected to a transient voltage waveform due a switching operation of a vacuum circuit breaker (VCB). This factor is identified as time domain severity factor (TDSF).

Design/methodology/approach

Since each of switching waveforms depend on the electrical interaction between transformer and the VCB, it implies that each of those combinations is characterized by a TDSF. To obtain the TDSF implies to manage two different models of the transformer under consideration. Firstly, a terminal model (black box model) of the transformer is built to compute the switching waveform at transformer terminals during VCB operation. Then, a detailed model (white box model) of the transformer is used to compute the internal transient voltage distribution along transformer windings.

Findings

A practical application of a power system consisting of a real transformer connected to a VCB is performed to show the sensibility of the TDSF coefficient.

Originality/value

Previous works found in the literature already consider the evaluation of the overvoltages in transformer associated to switching transient by coefficients, such as the frequency domain severity factor (FDSF). But this factor, as a global coefficient, could not assess the severity along windings to localize dielectrically weak points. Therefore, this paper overcomes this limitation proposing an alternative coefficient identified as time domain severity factor (TDSF).

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 31 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 24 October 2022

Rogério Lopes, Francisco Barros, Francisco Q. de Melo, Nuno V. Ramos, Rafael Cunha, Ricardo Maia, Rui Rodrigues, M.P.L. Parente and P.M.G. Moreira

The vehicle´s body front pillar should absorb most of the striker kinetic energy, while only a fraction of that is absorbed by the door structure. This study aims to discuss the…

Abstract

Purpose

The vehicle´s body front pillar should absorb most of the striker kinetic energy, while only a fraction of that is absorbed by the door structure. This study aims to discuss the aforementioned issue. In this test the striker is a virtual entity. Six uniaxial strain gauges are installed throughout the door. Additionally, contactless 3D digital image correlation (DIC) allows to assess the major door panel’s continuous deformation and strain fields.

Design/methodology/approach

A coach is a large and heavy long-distance passenger transport vehicle. Their structural certification, classifies coaches as M3 Class III vehicles. New coach structures’ designs need analyses of each sub-system for critical pre-validation of the entire structure, aiming driver and passenger carrier safety. Also, a thorough examination due to increased travel speed is needed.

Findings

Experimental pseudo-dynamic (PSD) results were compared and validated using finite element method (FEM) with two pieces of distinct FEM software (Abaqus® and PamCrash®). The time dependent solution was carried out by explicit techniques. Results by FEM and PSD test showed good agreement, evidencing the reliability of the tools selected. Results by PamCrash® were closer to the experimental data.

Practical implications

R-29 is truck-only regulation, however can be adapted to coaches in case of a frontal collision. The present work focuses on the impact behavior of the passenger front door subsystem.

Originality/value

As a first validation the entire structure, the behavior of a vehicle door, under in-plane impacts was studied. The corresponding deformation energy absorbed by the frontal passenger coach door under virtual impacts of a swinging striker was assessed using a PSD approach.

Details

International Journal of Structural Integrity, vol. 14 no. 1
Type: Research Article
ISSN: 1757-9864

Keywords

Article
Publication date: 4 April 2016

Maria Conceição A. Silva Portela, Ana Santos Camanho, Diogo Queiroz Almeida, Luiz Lopes, Sofia Nogueira Silva and Ricardo Castro

In a context of international economic crisis the improvement in the efficiency and productivity of public services is seen as a way to maintain high-quality levels at lower…

Abstract

Purpose

In a context of international economic crisis the improvement in the efficiency and productivity of public services is seen as a way to maintain high-quality levels at lower costs. Increased productivity can be promoted through benchmarking exercises, where key performance indicators (KPIs), individually or aggregated, are used to compare health units. The purpose of this paper is to describe a benchmarking platform, called Hospital Benchmarking (HOBE), where hospital’s services are used as the unit of analysis.

Design/methodology/approach

HOBE platform includes a set of managerial indicators through which hospital services’ are compared. The platform also benchmarks services through aggregate service indicators, and provides an aggregate measure of hospital’s performance based on a composite indicator of the service’s performances. These aggregate indicators were obtained through data envelopment analysis (DEA).

Findings

Some results are presented for Portuguese hospitals for the trial years of 2008 and 2009, for which data is publicly available. Details for the service-level analysis are provided for a sample hospital, as well as details on the aggregate performance resulting from services performances.

Practical implications

HOBE’s features and outcomes show that the platform can be used to guide management actions and to support the design of health policies by administrative authorities, provided that good quality and timely data are available, and that hospitals are involved in the design of the KPIs.

Originality/value

The platform is innovative in the sense that it bases its analysis on hospital’s services, which are in general more comparable among hospitals than indicators of hospital overall performance. In addition, it makes use of DEA to aggregate performance indicators, allowing for user choice in the inputs and outputs to be aggregated, and it proposes a novel model to aggregate service’s efficiencies into a single measure of hospital performance.

Article
Publication date: 31 August 2022

Silvia Lopes, Paulo C. Dias, Ana Sabino, Francisco Cesário and Ricardo Peixoto

The present study aims to examine the mediating role of (in)voluntariness in teleworking in explaining the relationship between employees’ fit to telework and work well-being…

Abstract

Purpose

The present study aims to examine the mediating role of (in)voluntariness in teleworking in explaining the relationship between employees’ fit to telework and work well-being (i.e. work engagement and exhaustion).

Design/methodology/approach

A cross-sectional survey design was used in this study. The sample comprised 222 individuals performing telework in Portugal. Statistical analyses employed were descriptive statistics, Pearson’s correlation, confirmatory factor and structural equation analyses, and mediation analysis using Hayes Process macro.

Findings

The findings confirmed the hypothesis that employees’ fit to telework raises the voluntariness in telework and decreases involuntariness in telework. However, contrary to expectations, no significant relationships were found between voluntariness in telework, work engagement and exhaustion. Yet, involuntariness in telework showed a significant role in decreasing work engagement and increasing workers’ exhaustion. The mediating role of involuntariness in telework was confirmed in explaining the relationship between employees’ fit to telework and exhaustion.

Practical implications

Managers in global firms can draw from the results to understand how employees’ fit to telework directly and/or indirectly contributes to work well-being and develop human resource (HR) management practices aiming to increase employees’ fit to telework.

Originality/value

Although teleworking is already studied, to the best of the authors’ knowledge, no studies have analyzed the same conceptual model employees’ fit to telework, (in)voluntariness in teleworking and work well-being.

Details

Employee Relations: The International Journal, vol. 45 no. 1
Type: Research Article
ISSN: 0142-5455

Keywords

Article
Publication date: 6 March 2019

Luis Hernan Contreras Pinochet, Guilherme Tongnole Diogo, Evandro Luiz Lopes, Eliane Herrero and Ricardo Luiz Pereira Bueno

Given the large global investments made in FinTechs and the context of Brazilian credit (which has been suffering from the effects of the crisis in the last decade), the purpose…

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Abstract

Purpose

Given the large global investments made in FinTechs and the context of Brazilian credit (which has been suffering from the effects of the crisis in the last decade), the purpose of this paper is to study the propensity of consumption of credit services offered by FinTechs of loans. In order to discover the factors that influenced the propensity to apply for FinTech loans, a theoretical model was designed, which was tested by means of a survey given to individuals who might contract loans.

Design/methodology/approach

The final sample consisted of 507 individuals whose data were analyzed through structural equation modeling (SEM), with estimation of partial least squares.

Findings

From the results of the research, it was possible to draw a profile of the FinTechs of Brazilian loans and also to estimate the antecedents of the propensity to utilize this type of service.

Research limitations/implications

The model proposed in this work was developed to measure the propensity to consume in relation to the credit services offered by lending FinTechs.

Practical implications

The consumer should intensify the use of these channels to shape financial products and services to their needs, thereby democratizing access to credit, which is often restricted in quantity and quality by policies of institutions that dominate the Brazilian lending market.

Originality/value

Aspects such as trust, personal innovation, perceived utility, ease of use and social influence, as well as the constructs that precede them like privacy, stigma and transactional distance, explain 41.5 percent of the propensity to use services from lending FinTechs in Brazil.

Details

International Journal of Bank Marketing, vol. 37 no. 5
Type: Research Article
ISSN: 0265-2323

Keywords

Article
Publication date: 10 July 2017

Ricardo Vinícius Dias Jordão and Jorge Casas Novas

The purpose of this paper is to propose a theoretical-conceptual model supporting the analysis of the effects of small- and medium-sized enterprises (SMEs) networks on knowledge…

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Abstract

Purpose

The purpose of this paper is to propose a theoretical-conceptual model supporting the analysis of the effects of small- and medium-sized enterprises (SMEs) networks on knowledge management (KM) and intellectual capital (IC).

Design/methodology/approach

The paper reviews literature on KM, IC and networks theories. The role of SMEs networks on KM and IC was discussed, analysing previous studies that supported the proposition of the model in question. In such model SMEs networks are seen as knowledge networks which are analysed in terms of the network formation process, the context, the strategy, the organisational culture and the stimuli for the sharing of knowledge. KM is observed in terms of knowledge creation, systematisation and sharing. Finally, IC encompasses human capital, structural capital and relational capital. It is noteworthy that KM and IC were considered deeply and closely related.

Findings

The conclusions obtained help to fill an important gap in the management, accounting, KM and IC literature, showing that the processes of creating, acquiring, maintaining, systematising and sharing information and knowledge and IC generation in SMEs networks can be influenced by the network formation process, by the organisational context, as well as by the strategy, organisational culture and stimuli to sharing knowledge.

Research limitations/implications

The paper provides a theoretical contribution by increasing understanding of the effect of SMEs networks on KM and IC practices – an understanding still at the early stages in the literature. Moreover, the originality of the model proposed extends the relevance of this research, as the literature does not contain a sufficiently established and tested approach that simultaneously provides a clear view of the relations between SMEs, networks, KM and IC, highlighting how SMEs can use networks as a strategy to achieve a more effective management of the knowledge assets forming IC. So, the paper offers several avenues for future research.

Practical implications

Based on previous empirical research, it was perceived that the original model presented in this paper is consistent, collaborating to improve management practice, providing a competitive benchmarking process. This can allow analysts, managers and other decision makers, by using SMEs networks to improve organisational performance, innovation, sustainability, competitiveness and value.

Originality/value

The paper presents an innovative theoretical-conceptual model focussed on the role of SMEs networks on KM and IC, indicating a strong link between the former and the latter in such enterprises in terms of performance, innovation, sustainability, competitiveness and value, an issue whose understanding, although quite relevant, is still incipient in the literature.

Details

Journal of Intellectual Capital, vol. 18 no. 3
Type: Research Article
ISSN: 1469-1930

Keywords

Article
Publication date: 5 March 2018

Flávia Schwartz Maranho and Ricardo Leal

The relationship between the role played by corporate governance (CG) mechanisms and shareholder wealth is an important and mature topic in some countries and regions. However…

Abstract

Purpose

The relationship between the role played by corporate governance (CG) mechanisms and shareholder wealth is an important and mature topic in some countries and regions. However, despite the considerable number of studies, the results are still inconclusive. The purpose of this paper is to contribute to the debate around the theme in Latin America through a meta-analysis.

Design/methodology/approach

The study used meta-analytic procedures to review 42 articles produced by researchers from Latin American countries, whose samples were composed of Latin American firms.

Findings

The results suggest that CG best practices are associated with better Latin American firm performance. The evidence also suggests that results are moderated by the characteristics of boards of directors, the ownership, and control structure and various simultaneous CG mechanisms, through broad indices and special CG trading segments.

Originality/Value

The relationship between GC and firm performance possesses certain peculiarities in the case of Latin American countries and the literature on the region is certainly not as abundant and mature. As most of the articles reviewed were written in Portuguese and Spanish and published in local journals, the consolidation produced should also be useful for researchers throughout the world by enabling them to access their ideas.

Propósito

A relação entre o papel desempenhado pelos mecanismos de governança corporativa (GC) e a riqueza dos acionistas é um tópico importante e maduro em alguns países e regiões. No entanto, os resultados ainda se apresentam ambíguos, apesar do grande número de estudos. Este ensaio pretende contribuir para o debate do tema na região através de uma meta análise.

Diseño/metodología/enfoque

O trabalho fez uso de procedimentos meta-analíticos para revisar 42 artigos produzidos por pesquisadores da região e de outras localidades, cujas amostras são compostas por empresas de países da América Latina.

Recomendaciones

Os resultados sugerem que de forma geral melhores práticas de GC são associadas a um melhor desempenho das empresas latino-americanas. Este trabalho sugere também que os resultados encontrados são moderados pelas características dos conselhos de administração, da estrutura de propriedade e controle e de diversos mecanismos simultâneos de GC, como índices amplos e segmentos especiais de GC.

Originalidad/Valor

Esta relação possui peculiaridades quando se tratam de países latino-americanos e a literatura sobre a região certamente não se apresenta tão abundante e madura. Acredita-se que a consolidação produzida será útil para pesquisadores ao redor do mundo, uma vez que a maioria dos artigos revisados foi escrita em português ou espanhol e publicada em periódicos locais, o que não a torna acessível a todos.

Details

Academia Revista Latinoamericana de Administración, vol. 31 no. 1
Type: Research Article
ISSN: 1012-8255

Keywords

Article
Publication date: 16 March 2023

Deo Shao, Fredrick R. Ishengoma, Charalampos Alexopoulos, Stuti Saxena, Anastasija Nikiforova and Ricardo Matheus

The purpose of this paper is to highlight the drivers, barriers, benefits and risks affecting the integration of Internet of Things (IoT) into the e-government and to provide a

Abstract

Purpose

The purpose of this paper is to highlight the drivers, barriers, benefits and risks affecting the integration of Internet of Things (IoT) into the e-government and to provide a future research agenda.

Design/methodology/approach

Existing literature examining the relationships between e-government and IoT is scanned and evaluated by conceptualizing the IoT concept in the e-government perspective.

Findings

The study shows that there are drivers to integrate IoT in e-government, such as ensuring the economy, efficiency and effectiveness of government operations, which would largely establish a relationship between the government and the citizens. Furthermore, there are barriers to such integration, given the lack of political will, the appropriate information technology infrastructure, the training of the stakeholders with a focus on the employee and the like.

Originality/value

The integration of IoT in e-government is a novel and weakly explored concept, particularly in the light of new advances such as blockchain in the e-government, which requires further exploration and conceptualization, thereby achieving a shared/common vision and body of knowledge for its further successful and sustainable adoption – to the best of the authors’ knowledge, the current study is one of these initial attempts.

Article
Publication date: 25 April 2022

Subrata Talapatra, Kutub Uddin, Manuel Doiro and Gilberto Santos

The aim of this study is to investigate the perceived benefits offered by integrated management system (IMS) in the readymade garments (RMG) sector in Bangladesh and the…

Abstract

Purpose

The aim of this study is to investigate the perceived benefits offered by integrated management system (IMS) in the readymade garments (RMG) sector in Bangladesh and the respective linkage with corporate social responsibility (CSR) to promote sustainable development. This study presents a list of IMS benefits composed of different international management standards according to ISO 9001:2015, ISO 14001:2015, OSHAS 18001: 2007 and SA 8000:2014.

Design/methodology/approach

To identify the possible benefits of IMS, a systematic literature review was conducted from 2009 to 2019, namely, in the database of Elsevier, Emerald and John Wiley. A questionnaire survey was developed with the purpose of examining the perceived main benefits of IMS. The questionnaire was e-mailed to 355 representatives of 15 RMG sectors in Bangladesh. A total of 256 complete and useable responses were received, constituting the base of this work. Subsequently, statistical analysis was conducted using SPSS 20 software.

Findings

The main findings of the present study show that the most important five benefits of IMS in RMG sector in Bangladesh are better capacity to achieve organization’s objectives, optimum use of various resources, business sustainability, synergies of different management policies and reduction of duplication efforts.

Practical implications

Two major limitations of the study are as follows: first, it is not a longitudinal study; second, IMS benefits were examined in the national sector context. The present study has both theoretical and practical implications. The study presents a comprehensive list of IMS benefits that contribute to the existing literature from a theoretical point of view. On the other hand and from a practical point of view, this study encourages managers to implement IMS in their organizations.

Originality/value

This study helps in understanding the contribution of IMS benefits to cleaner production and CSR in Bangladesh. The focus on the benefits of IMS in the RMG sector in Bangladesh is another significant aspect of this study because it promotes the development of environmental policies linked to CSR with stakeholder engagement, as a driver to sustainable development.

Details

Social Responsibility Journal, vol. 19 no. 1
Type: Research Article
ISSN: 1747-1117

Keywords

Article
Publication date: 13 March 2017

Angélica Megda Silva, Denis Abessa, Paulo Augusto Zaitune Pamplin and Maria Beatriz Bohrer-Morel

The São Lourenço River (SLR) is used to supply potable waters for the cities of São Lourenço da Serra and Juquitiba, but receives the residues from the water treatment plants…

Abstract

Purpose

The São Lourenço River (SLR) is used to supply potable waters for the cities of São Lourenço da Serra and Juquitiba, but receives the residues from the water treatment plants (WTPs) and sewage treatment plants (STPs), respectively. The purpose of this paper is to evaluate the impacts of the discharges of Juquitiba’s WTP and STP on the quality of the SLR, by using an integrated approach based on different lines of evidence.

Design/methodology/approach

Six sampling sites were established along the river and comprised areas situated upstream and downstream of the discharges. Five sampling surveys were performed between 2004 and 2006 for collecting water and sediment samples for ecotoxicological assays. In two of these campaigns, benthic community structure and geochemistry (metals, nutrients and sediment texture) were also assessed.

Findings

Concentrations of P, Fe and Al in waters exceeded the national standards, but sediments were not considered to be contaminated by metals or nutrients. Water and sediments tended to exhibit marginal toxicities, excluding the sediments from JQT007 and JQT008 that were frequently toxic. Combination of geochemistry, toxicity and ecological indices indicated that some sites are not degraded, but in some stations the benthic alteration may be due to non-measured contaminants, especially in JQT007 and JQT008.

Practical implications

As the use of waters from SLR for public supply has increased, these results show that action should be taken in order to reverse the environmental degradation of SRL.

Originality/value

This research combined sediment and water quality assessments in order to provide a more suitable and reliable diagnostic of the environmental quality of the SLR.

Details

Management of Environmental Quality: An International Journal, vol. 28 no. 2
Type: Research Article
ISSN: 1477-7835

Keywords

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